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J. Bacteriol., May 1997, 3350-3353, Vol 179, No. 10
Copyright © 1997, American Society for Microbiology

Na+-induced structural change of a soil bacterium, S34, and Ca2+ requirement for preserving its original structure

H Mitsui, R Hattori, H Watanabe, A Tonosaki and T Hattori
Institute of Genetic Ecology, Tohoku University, Katahira, Japan.

A drastic change in the outer membrane structure of a salt-sensitive soil bacterium, S34, related to the genus Deinococcus was induced by 0.2 to 0.4% (wt/vol) NaCl. The change was relieved by 6 mM CaCl2 and induced by 1 mM EGTA. The results indicate the strong dependence of the organism on calcium.

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